Abstract: An optical imaging lens, from object side to image side, includes a positive first lens element that is a meniscus aspherical lens having a convex surface on the object side, an aperture stop, a negative second lens element that is a meniscus aspherical lens having a convex surface on the image side, a positive third lens element that is an aspherical lens while on the lens center, the convex surface is on the object side; and from the center toward the edge, the refractive power changes from positive power, through an inflection point, to negative power. The optical imaging lens satisfies specific mathematical conditions.

Abstract: An optical imaging lens, from object side to image side, includes a positive first lens element that is a meniscus aspherical lens having a convex surface on the object side, an aperture stop, a negative second lens element that is a meniscus aspherical lens having a convex surface on the image side, a positive third lens element that is an aspherical lens while on the lens center, the convex surface is on the object side; and from the center toward the edge, the refractive power changes from positive power, through an inflection point, to negative power. The optical imaging lens satisfies following conditions: 0.5 < f 1 f < 1.0 ; ? - 0.3 < f 2 f < - 1.0 ; 0.05 < d 3 f < 0.2 ; R 21 - R 22 R 21 + R 22 < 0.